3a^2b + 6a^2b
9a^4b^2
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To simplify the expression 3a^2b + 6a^2b, we can combine like terms. Like terms have the same variables raised to the same powers.
First, let's look at the coefficient in front of the terms with a^2b. We have 3 and 6. To combine these coefficients, we can simply add them together.
3 + 6 = 9
So, the coefficient of the simplified expression will be 9.
Next, we look at the variable part. Both terms have a^2b, so we can keep that part the same.
Putting it all together, we have:
9a^2b
Therefore, the simplified expression is 9a^2b.